Process for producing solar cells

Coating processes – Electrical product produced – Photoelectric

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29572, 427 74, H01L 3118

Patent

active

046439137

ABSTRACT:
A process for producing solar cells which comprises applying a composition for anti-reflection coating formation on one side of a silicon base plate having a p-n junction therein, printing an Ag paste for contact formation on predetermined areas of the coat, and heat-treating the resulting plate at a temperature of 400.degree. to 900.degree. C. to complete anti-reflection coating and a light-receiving side contact, the process being characterized in that the composition for anti-reflection coating formation contains as essential component, (a) at least one member selected from the metal-organic ligand complex compounds represented by the general formula M(OR.sub.1).sub.n (L).sub.a-n wherein M is a metal selected from Zn, Al, Ga, In, Ti, Zr, Sn, V, Nb, Ta, Mo, and W; R.sub.1 is a C.sub.1 -C.sub.18 alkyl group; L is an organic ligand which forms an non-hydrolyzable bond with the metal ion; a is the valency of the metal M; and n is an integer satisfying 1.ltoreq.n<a, and hydrolytic condensation products thereof represented by the general formula (OR.sub.1).sub.n-1 M(L).sub.a-n --O--M(OR.sub.1).sub.n-1 (L).sub.a-n, (b) an organotin compound, and (c) a solvent.

REFERENCES:
patent: 4328260 (1982-05-01), Whitehouse
patent: 4361598 (1982-11-01), Yoldas
patent: 4463216 (1984-07-01), Nakano
Haigh, "Fired Through Printed Contacts on Antireflection Coated Silicon Terrestial Solar Cells", IEEE Photovoltaic Specialists Conference, pp. 360-361 (1976).

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